Boiler.



No. 650,966.. Patented June 5, I900.

J. CARNEGIE, W. J. KENNEDY &. H. L. EBSEN.

BOILER.

(Application Bled Dqc. 8, 1898.) (No Model.) 2 SheetsSheeI l.

ATTORNEY m: ucnms Pin-a: c0 HDTD-I mmv WASHINGTON. u. c.

No. 650,966. Patented June-5, I900. J. CARNEGIE, W. J. KENNEDY & H. L. EBSEN.

. BOILER.

(Application filed Dec.. 8, 1898.)

2 Sheets$heet 2.

(No Model.)

WITNESSES //v ENTOHS ATTOHNEK PHOTO-UTHQ. wASH-NUTO JAMES CARNEGIE, OE PASSAIC, IVILLIAM J. KENNEDY, OF JERSEY CITY,-

ATENT OFFICE.

AND HENRY L. EBSEN, OF HOBOKEN, NEW JERSEY.

BOILER.

srEoIEIcA'rIoN forming part of Letters Patent Are-650,966, Lia-tea J'un' 5, 1 906.

Application filed December a, 1898. Serial No. 698,658. (No model.) i

To all whom, it mag concern:

Be it known that we, J AMES CARNEGIE, residing at Passaic, in the county of Passaic, WILLIAM J. KENNEDY, residing at Jersey City, in the county of Hudson, and HENRY L. EBSEN, residing at I-Ioboken, in the county of Hudson, State of New Jersey, citizens of the v United States, have invented a new and useful Boiler, of which the following fication.

Our invention relates to boilers; and the object thereof is to provide a boiler especially adapted for marine purposes in which the steam-generatin g capacityshall not be'diminished, and is even increased, while the liability tocollapse by the destruction of the stays supporting the walls of the combustion-chamber is obviated, the weight of the boiler is decreased, and a more rapid circulation is effected, the water being drawn from the parts of the boiler where there is a less degree of heat and discharged into the boiler highly heated. We attain these 7 objectsby the mechanism illustrated in the accompanying drawings, in which Figure 1 is a longitudinal sectional view in elevation of a boiler constructed according to our invention. Fig. 2 is a rear end view of the same, the combustion-chamber and part of the tubes being in section; and Fig. 3 is a plan View of the tubesin the co1nbus-. tion-chamber at the rear end of the boiler.

In the drawings similar numerals of reference refer to the same parts in each of the views, and in the practice of our invention we provide a boiler which consists of acylindrical shell 5, inclosed at each end 6 and 7 and provided with tubular fire-chambers 8, 9, and 10, each of which is provided with firegrates. (Not shown, as this part of the construction is well known.) .The boiler is also preferably provided with'a plurality of tubes 11, through which the heated gases of combustion pass, as indicated by the arrows.

In the rear of the cylindrical shell 5 We construct a chamber 12, the walls of which consist of fireproof non-conducting material 13, and is preferably inclosed by a steel casing 14. In the bottom of the chamber 12 we mount a large tube 15, which is connected with the sides of the cylindrical part of the is a speciboiler by tubes 16, which are prolonged in- .side the said cylindrical part, as shown at 17, and take in water from any desired point, as shown at 18; and the tube is connected with the said cylindrical part by other tubes 19, which are prolonged inside the said cylindrical part, as shown at 20, and take in water from the bottom of the cylindrical part, preferably near the front end thereof,- as shown at 21. a

' Connected with the tubes 19 are a plurality of small tubes 22, which are connected with drums or headers 23 atthe topof the chamber 12 and which are connected with the cylindrical part of the boiler, as clearly shown. We also connect with the tube 15 a plurality of tubes 24, which are bent or curved at the upper end thereof, as shown at 25, and are connected with and discharge into the cylindrical part of the boiler, as shown at 26, or the tubes 24 may be connected with tubular stays 27, which may be provided with ports or openings 28 at any desired point, so that the water and steam may bedischarged near the front end of the cylindrical part, if desired- The operation is as follows: The combustion of the fuel takes place in the tubular fire-chambers 8, 9, and 10, and the combustion of the gases is continued in .the chamber 12, from whence the heated gases pass through the tubes '11 into the smoke-stack 29. As shown in the drawings, all the heated gases pass through the tubes 11; but it is not essential that there should be any tubes 11.'

- By this construction the water will be heated to a greater degree at the top of the boiler than at the bottom and at the rear end than at the front and at the center than at the sides. For this reason the prolongations 17 and of the tubes 16 and 19 are provided, so that the water is taken into the said tubes from the coldest part of the boiler, and as it passes through the tube 15 and tubes 22 and the water in the cylindrical part, and consequen tly is carried upward and discharged into the boileror cylindrical part thereof with great rapidity and thorough circulation is guaranteed. In the drawings all the tubes 22 and 2t and drums 23 are shown as being discharged 24 it is heated to a much higher degree thaninto the cylindrical part of the boiler below the water-level; but this is not absolutely essential. There the tubes 24 are connected with the tubular stays 27, the heated water from the said tubes can be delivered at or near the front of the cylindrical part, as will be plainly seen.

By this construction we avoid the inclosing of the combustion-chamber connecting the fire-chambers with the flues within the boilersa great weakness in marine boilers now in useand at the same time the heating-surface is greatly increased while the weight of the boiler is diminished.

As it is evident that many changes may be made in the construction and arrangement of tubes in the chamber 12 and in the disposition of said chamber without departingfrom the spirit of our invention, we reservethe right to make all changes which fairly come within the scope of the said'invention.

I-Iaving fully described our invention, what we claim, and desire to secure by LettersPatcut, is-

1. A boiler comprising a cylindricalpart.

having inclosed fire-chambers, a combustionchamber mounted at the rear end of said cylindrical part, tubes mounted in said combustion-chamber, said tubes being in communication with said cylindrical part at or near the bottom of said chamber, and also being connected with saidcylindrical part at or near the top of said chamber, and tubularstays in said cylindrical part with which part of said tubes in said com bustion-chamber are connected, said tubular stays being provided with ports or openings, substantially as and for the purpose described.

2. A boiler comprising a cylindrical part having inclosed fire-chambers, a combustionchamber mounted at the rear end of said cylindrical part, a large tube mounted in the bottom of said combustion-chamber, short. tubes connecting said large tube with the said cylindrical part, and provided with extensions inside of said cylindrical part, said extensions being in communication with'the interior of said boiler at predetermined points,

a plurality of tubes connected with the large pipes at the bottom of said combustion-cham-: her, said tubes being also connected with the said cylindrical part at or near the upper end of said chamber, substantially as and for the purpose set forth.

3. A boiler comprising a cylindrical part having inclosed fire-chambers, a combustion chamber mounted at the rear end of said cylindrical part, a large tube mounted in the .bottom,and at the rear side of said combustion-chamber, short tubes connecting said large tube with the said cylindrical part, said short tubes being provided within said cylindrical part with extensions which communicate with the interior of the boiler at predetermined points, a plurality of tubes con= nected with said large tube and provided at the upper end thereof with curved portions, the ends of which are connected with said cylindrical part, drums mounted at the top of said combustion-chamber and in communication with the interior of said cylindrical part, and a plurality of tubes. connecting said drumspwiththe short tubes at the bottom of said chamber substantially:as and for the purpose described;-

4. A boilerxcomprising-a cylindricalpart .having inclosed fire-chambers, a combustion- .chamber: mounted at the rear end of saidcylindrical part, a large 'tubemounted in the bottom andat the rear'sidezof said combustion chamber, short tubes connecting said large tubefwith the said cylindrical part, said short tubes being provided within said cylindrical part with extensions which communicate with: the interior of the boiler at predetermined points, a plurality. of tubes cone nected-with said large tube and-provided at the upper end thereof=-with curved portions, the ends-of whichare connected with the said cylindrical part,.tubular stays in said cylin- .drical: part, andtpartr of said 'lastnamed tubes beingconnected with said stays which are providedwithports or openings at predetermined points, drums mounted at the top of said combustion-chamber "and in communication with said cylindrical part, and a plurality oftubes connecting said short tubes at the bottomof the chamber with said drums,

substantially: as and for the purpose-dcscribed..

' In testimony that "we claim,- the above we have hereto aflixed our signatures in the presence. of two witnesses.

J AMESI CARNEGIE. WILLIAM J.. KENNEDY. HENRY L. EBSEN.

Witnesses:

Gno. E3 W001), L. II. RUSSELL.- 

